Mash-tub



' (Nomoal.)

` G. KAESTNER.

. Mash Tub. -*-NQ. 241,9`9q2. Patented May 24, 1881.

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. UNITED STATES.

PATENT OFFICE.

CHARLES KAESTNER, OF CHICAGO, ILLINOIS.

MASH-TUB.

SP-ECIFICATIONVform'mg part of Letters Patent No. 241,992, dated May 24,1881,

Application filed March S, 1881.

To all whom it may concern Be it known that I, CHARLES KAEsTNER, ofChicago, in the county of Cook and State of Illinois, have invented acertain new and luseful Improvement in Mash-Tubs, of which the followingis a specification.

My invention relates to revolving stirrers for mash-t ubs; and itconsists in the peculiar manner of mount-in g the spindle and sleevewhich carry the stirrer-arms in the mash-tub, as fully hereinafterexplained, and pointed out by the claim.

In the accompanying drawing, forming a part hereof', the mashtub isshown in vertical section and the stirrers and mechanism for drivingthem in elevation and partial section.

A is the mash-tub, of usual construction, and supported in theordinarymanner. It contains two sets of stirrers, one having iin gers,which stir the mash at the sides of the tub, and the other revolvingwithin the first at greater speed, and throwing the mash outwardly atthe same time that it is stirred.

B B are the arms for the outer stirrers,which arms (preferably three innumber) are bolted to a hub-plate, a. EachV arm B is provided with anumber otl angular fingers, b, which project downwardly from the same tonear the bottom of the mash-tub, and occupy about haltl the length ofeach arm, commencing from its outer end and extending about half-way tothe center of the tub. These fingers present angles forward in thedirection ot' their motion, in orL der. to better divide the mash. Thehub-plate a is secured to the upper end of a vertical spindle, C, whichis stepped on a journal-box, c, below the tub, and rises through suchtub to near the top ot' the same. The spindle C, near its lower end, hasa bevel-gear, d, which meshes with a bevel-gear, c, on a horizontalshaft, D. The shaft D is journaled in suitable boxes, and carries aniron wheel, j', which rests on a paper friction-wheel, g, secured to thedriving-shaft or line-shafting E. rllhe iron wheel is adapted to belifted oil' of the paper wheel in the wellknowu manner, so that thestirrers ofthe mashtub can be disconnected from the power when desired.

F F are the arms of the second stirrer, (preferably two in number,)which are secured to a hub-plate, h, mounted on the upper end of asleeve, G, which surrounds the spindle C and (No model.)

extends down through the bottom of the tub.

The sleeve G does not rise up to the hub-plate a, and the arms F areonly about half as long as the arms B, so that they will clear the innerlingers on the arms B in operation. The arms I*` have angular fingers i,similar to the tingers b, but shorter. The fingers c', however, occupyall of the available space on the arms F, being set the requireddistance apart from the outer to the inner ends of such arms.

Below the mash-tub the sleeve G carries a plain gear-wheel, k, whichmeshes with a larger gear, l, on a vertical spindle, H, arrangedparallel to the spindle C. The spindle H also has a smaller gear, m,which meshes with a larger gear, a, on the spindle C above thebevel-gear tl. The gears k ima are so proportioned that the centralstirrers will be revolved at twice the speed ot' the outer stirrers, theouter stirrers making about ten revolutions a minute, while the innerstirrers make twenty revolutions in the same time. 'Ihis train beingcomposed ot' four gears, the motion ot1 the sleeve G is in the samedirection aspthat of the spindle C.

Instead of having the sleeve G driven by the gears k lm n, it may beoperated by an equivalent but somewhat different arrangement of gears,which gears are shown in the drawing by dotted lines to the right of thespindle C and sleeve G.

To prevent any liquid from leaking through the tub around the sleeve G,I surround such sleeve bya hollow standard, I, which is secured rigidlyand tightly to the bottom ot the tub. At its upper end the standard I isprovided with a stufting-box, K, which guides the sleeve, besidesserving to keep the mash from working down between the sleeve andstandard. The sleeve G, at its upper end, is also provided with astuffing-box, L, which guides the spindle C and prevents the mash fromgetting into the sleeve G.

What I claim as my invention is In a mash-tub, the combination, with thestirrer-arms B F, the spindle C, and sleeve G, of the hollow standard Iand the stufiing-boxes K L, substantially as described and shown.

CHARLES KAESTNER.

Witnesses F. W. KAsEHAeEN, J. COHEN.

